Fix: don't crash app when applicationContext is not available (#217)

* Add fix

* Update

* Update CHANGELOG

Author: buenaflor

CHANGELOG.md

@@ -14,6 +14,10 @@ pod("Sentry") {
 }
 ```
 
+### Fixes
+
+- Don't crash app when `applicationContext` is not available ([#217](https://github.com/getsentry/sentry-kotlin-multiplatform/pull/217))
+
 ### Enhancements
 
 - Make `setSentryUnhandledExceptionHook` public ([#208](https://github.com/getsentry/sentry-kotlin-multiplatform/pull/208))

sentry-kotlin-multiplatform/src/androidMain/kotlin/io/sentry/kotlin/multiplatform/SentryInit.android.kt

@@ -11,10 +11,18 @@ import io.sentry.kotlin.multiplatform.extensions.toAndroidSentryOptionsCallback
 internal actual fun initSentry(configuration: OptionsConfiguration) {
     val options = SentryOptions()
     configuration.invoke(options)
-    SentryAndroid.init(applicationContext, options.toAndroidSentryOptionsCallback())
+
+    val context = applicationContext ?: run {
+        // TODO: add logging later
+        return
+    }
+
+    SentryAndroid.init(context) { sentryOptions ->
+        options.toAndroidSentryOptionsCallback().invoke(sentryOptions)
+    }
 }
 
-internal lateinit var applicationContext: Context
+internal var applicationContext: Context? = null
     private set
 
 public actual typealias Context = Context

sentry-kotlin-multiplatform/src/androidUnitTest/kotlin/io/sentry/kotlin/multiplatform/SentryContextProviderTest.kt

@@ -7,6 +7,7 @@ import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.mockito.Mockito.mock
+import kotlin.test.assertNotNull
 
 @RunWith(AndroidJUnit4::class)
 class SentryContextProviderTest : BaseSentryTest() {
@@ -22,8 +23,8 @@ class SentryContextProviderTest : BaseSentryTest() {
     class SentryContextOnCreateTest : BaseSentryTest() {
         @Test
         fun `onCreate initializes applicationContext`() {
-            // Simple call to the lateinit applicationContext to make sure it's initialized
-            applicationContext
+            // Simple call to the applicationContext to make sure it's initialized
+            assertNotNull(applicationContext)
         }
     }